tcpdump mailing list archives

Re: capturing multiple packets


From: Guy Harris <guy () alum mit edu>
Date: Thu, 8 Apr 2010 10:32:14 -0700


On Apr 7, 2010, at 11:52 PM, Vlabs .C wrote:

i am developing a small sniffer using libpcap API's. I want to capture,
process ARP, IP and TCP packets at a time. Right now I am not able find how
to do it using pcap_compile to capture more than one type of packet at a
time.

        "arp or ip"

is the filter to pass to pcap_compile() in that case (TCP packets *are* IP packets).

If you want to capture both IPv4 and IPv6, do

        "arp or ip or ip6"-
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